Product Detail Toe spring & heel kick smooth out movement Internal 'flex grooves' help feet move naturally Midsole widens at forefoot & flares out around trainer for stability TPU heel clip helps stop foot rolling Silver reflective TPU heel strip This shoe has been granted the APMA* Seal of Acceptance. The APMA Seal is for footwear found to promote good foot health. *American Podiatric Medical Association Upper Material: Knit Polyester Tpu Lining Material: Fabric Fastening: Pull-on (with laces) Outsole: Slip-Resistant Rubber Technology: Neodynamic